ICD-10-CM 2027 diagnosis code
S70.342External constriction, left thigh
S70.342 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it and add the required 7th character.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About S70.342
S70.342 is the ICD-10-CM diagnosis code for external constriction, left thigh. It belongs to category S70 (superficial injury of hip and thigh), block S70-S79 (injuries to the hip and thigh) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.
Within S70.34 (external constriction of thigh), S70.342 is specifically for external constriction, left thigh. Related codes cover right thigh (S70.341) and unspecified thigh (S70.349).
Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
7th character
The appropriate 7th character is to be added to each code from category S70
Notes that apply from higher levels
Instructions written at a parent level also apply to S70.342.
Broader instructions also apply from S70-S79 Injuries to the hip and thigh and Chapter 19: Injury, poisoning and certain other consequences of external causes.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about S70.342
Is S70.342 billable?
- No. S70.342 is a header code. Report one of its more specific subcodes instead.